package com.demo.project_template.config.security;

import com.demo.project_template.filter.JwtAuthenticationTokenFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import javax.annotation.Resource;


/**
 * @author yyl25
 */
@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Resource
    private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;
    @Resource
    private AuthenticationEntryPoint authenticationEntryPoint;
    @Resource
    private AccessDeniedHandler accessDeniedHandler;


    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //关闭csrf

                .csrf().disable()
                //不通过Session获取SecurityContext
                .securityContext()
                .and()
                //.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                //.and()
                .authorizeRequests()

                .antMatchers("/doc.html",
                        "/v2/**",
                        "/swagger-resources/**",
                        "/webjars/**")
                .permitAll()
                // 对于登录接口 允许匿名访问
                .antMatchers(
                        "/login/**")
                .anonymous()
                // 除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();


        //把token校验过滤器添加到过滤器链中
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);

        //配置异常处理器
        http.exceptionHandling()
                .authenticationEntryPoint(authenticationEntryPoint)
                .accessDeniedHandler(accessDeniedHandler);

        //跨域
        http.cors();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
}

